Tickets are always accumulated as rewards for completing activities. It cannot be disabled, but you can prevent them from being spent.
You can update the settings for your Child Profiles at any time from the Parents Page.
The Parents Page can be reached by selecting the gear icon at the corner of your screen and selecting Parent Resources from the menu. If you are navigating through the site, you will see an Options icon in the bottom-left corner of your screen. Click the icon, then select Parent when prompted. Enter your password to gain access.
Select the Settings panel from the Parent Page menu. You can adjust this setting for All Profiles with the All Profiles panel, or individually by selecting the Child Profile you want to edit.
Next, select Permissions from the menu. Desktop users will see Audio at the left side of the page. Mobile device users will need to tap the arrow to the right of the General title at the top of the screen to shift the Permissions panel into view.
Select the green button on the Spending Tickets feature to deactivate Ticket spending and purchases. Your changes will be saved automatically, and all purchase attempts will be password-blocked in the Shopping Center.